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<pre><span class="sourceLineNo">001</span><a name="line.1"></a>
<span class="sourceLineNo">002</span>/*<a name="line.2"></a>
<span class="sourceLineNo">003</span> * Copyright (C) 2014 Archie L. Cobbs. All rights reserved.<a name="line.3"></a>
<span class="sourceLineNo">004</span> *<a name="line.4"></a>
<span class="sourceLineNo">005</span> * $Id: CompositeIndexParser.html 842 2015-03-07 18:20:42Z archie.cobbs $<a name="line.5"></a>
<span class="sourceLineNo">006</span> */<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>package org.jsimpledb.parse;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.util.SortedMap;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.util.regex.Matcher;<a name="line.11"></a>
<span class="sourceLineNo">012</span><a name="line.12"></a>
<span class="sourceLineNo">013</span>import org.jsimpledb.core.CompositeIndex;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.jsimpledb.core.ObjType;<a name="line.14"></a>
<span class="sourceLineNo">015</span><a name="line.15"></a>
<span class="sourceLineNo">016</span>/**<a name="line.16"></a>
<span class="sourceLineNo">017</span> * Parses a composite index.<a name="line.17"></a>
<span class="sourceLineNo">018</span> *<a name="line.18"></a>
<span class="sourceLineNo">019</span> * &lt;p&gt;<a name="line.19"></a>
<span class="sourceLineNo">020</span> * Syntax examples:<a name="line.20"></a>
<span class="sourceLineNo">021</span> * &lt;ul&gt;<a name="line.21"></a>
<span class="sourceLineNo">022</span> *  &lt;li&gt;&lt;code&gt;Person.byLastFirst&lt;/code&gt;&lt;/li&gt;<a name="line.22"></a>
<span class="sourceLineNo">023</span> *  &lt;li&gt;&lt;code&gt;Person.mycompositeindex&lt;/code&gt;&lt;/li&gt;<a name="line.23"></a>
<span class="sourceLineNo">024</span> * &lt;/ul&gt;<a name="line.24"></a>
<span class="sourceLineNo">025</span> */<a name="line.25"></a>
<span class="sourceLineNo">026</span>public class CompositeIndexParser implements Parser&lt;CompositeIndex&gt; {<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span>    private final SpaceParser spaceParser = new SpaceParser();<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>    @Override<a name="line.30"></a>
<span class="sourceLineNo">031</span>    public CompositeIndex parse(final ParseSession session, final ParseContext ctx, final boolean complete) {<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>        // Get object type<a name="line.33"></a>
<span class="sourceLineNo">034</span>        final int typeStart = ctx.getIndex();<a name="line.34"></a>
<span class="sourceLineNo">035</span>        final ObjType objType = new ObjTypeParser().parse(session, ctx, complete);<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>        // Get composite index name and resolve index<a name="line.37"></a>
<span class="sourceLineNo">038</span>        ctx.skipWhitespace();<a name="line.38"></a>
<span class="sourceLineNo">039</span>        if (!ctx.tryLiteral("."))<a name="line.39"></a>
<span class="sourceLineNo">040</span>            throw new ParseException(ctx, "expected composite index name").addCompletion(".");<a name="line.40"></a>
<span class="sourceLineNo">041</span>        ctx.skipWhitespace();<a name="line.41"></a>
<span class="sourceLineNo">042</span>        final SortedMap&lt;String, CompositeIndex&gt; indexMap = objType.getCompositeIndexesByName();<a name="line.42"></a>
<span class="sourceLineNo">043</span>        final Matcher nameMatcher = ctx.tryPattern("\\p{javaJavaIdentifierStart}\\p{javaJavaIdentifierPart}*");<a name="line.43"></a>
<span class="sourceLineNo">044</span>        if (nameMatcher == null)<a name="line.44"></a>
<span class="sourceLineNo">045</span>            throw new ParseException(ctx, "expected composite index name").addCompletions(indexMap.keySet());<a name="line.45"></a>
<span class="sourceLineNo">046</span>        final String indexName = nameMatcher.group();<a name="line.46"></a>
<span class="sourceLineNo">047</span>        final CompositeIndex index = indexMap.get(indexName);<a name="line.47"></a>
<span class="sourceLineNo">048</span>        if (index == null) {<a name="line.48"></a>
<span class="sourceLineNo">049</span>            throw new ParseException(ctx, "unknown composite index `" + indexName + "' on " + objType)<a name="line.49"></a>
<span class="sourceLineNo">050</span>              .addCompletions(ParseUtil.complete(indexMap.keySet(), indexName));<a name="line.50"></a>
<span class="sourceLineNo">051</span>        }<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>        // Done<a name="line.53"></a>
<span class="sourceLineNo">054</span>        return index;<a name="line.54"></a>
<span class="sourceLineNo">055</span>    }<a name="line.55"></a>
<span class="sourceLineNo">056</span>}<a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>




























































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